linux-kernel - Re: Nokia N900 sound driver and ECI GPIOs

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Message-ID: <2962055.pY3hWGpcok@saturn>
Date:   Mon, 02 Jan 2017 16:45:15 +0100
From:   joerg Reisenweber <joerg@...nmoko.org>
To:     Pali Rohár <pali.rohar@...il.com>
Cc:     Peter Ujfalusi <peter.ujfalusi@...com>,
        Pavel Machek <pavel@....cz>,
        Jarkko Nikula <jarkko.nikula@...mer.com>,
        Tony Lindgren <tony@...mide.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        Nishanth Menon <nm@...com>, Sebastian Reichel <sre@...nel.org>,
        Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
        linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Nokia N900 sound driver and ECI GPIOs

On Mon 02 January 2017 09:51:50 Pali Rohár wrote:
> On Monday 02 January 2017 10:34:34 Peter Ujfalusi wrote:
> > On 01/02/2017 12:36 AM, Pavel Machek wrote:
> > > Are there multi-button headsets compatible with N900?
> > 
> > Not sure if n900 is capable of handling ECI communication, n9 was. In n9
> > the PMIC/Audio chip had an ECI core integrated afaik
> 
> In N9 it is handled by twl5030 chip? Is there documentation for that
> ECI/ACI part? N900 has twl4030 so we need some chip documentation for
> adding support for N900...

No, N9 has TPS65951, not TPS65950 aka TWL4030 as in N900, the ECI is one of 
the differences between the two chips afaik

jOERG
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